ESU Flow Mirroring

The flowmirroring command allows the mirroring of specific traffic to an unused uplink port to be utilized for either troubleshooting packet flows or allowing network analyzers to sniff all the packets for unusual traffic.  Flow mirroring allows the capability to filter specific flows such as a specific VLAN, specific IP host or Ethernet address to the target port.  This allows observing just a portion of the traffic flowing over an uplink interface.

flowmirroring Command Structure

• Command Path - flowmirroring
• Action -  
  • * Source= - Insert source; The source is used to mirror packet flow of a target port. Select from options?

ESUx> flowmirroring <enter>

Insert source [any]: ? <enter>
Source is one the following interfaces:
any           any-downlink  any-uplink    mds1-1-1      mds1-1-2
mds1-1-3      mds1-1-4      mds1-10-1     mds1-10-2     mds1-10-3
mds1-10-4     mds1-11-1     mds1-11-2     mds1-11-3     mds1-11-4
mds1-12-1     mds1-12-2     mds1-12-3     mds1-12-4     mds1-13-1
mds1-13-2     mds1-13-3     mds1-13-4     mds1-14-1     mds1-14-2
mds1-14-3     mds1-14-4     mds1-15-1     mds1-15-2     mds1-15-3
mds1-15-4     mds1-16-1     mds1-16-2     mds1-16-3     mds1-16-4
mds1-17-1     mds1-17-2     mds1-17-3     mds1-17-4     mds1-18-1
mds1-18-2     mds1-18-3     mds1-18-4     mds1-19-1     mds1-19-2
mds1-19-3     mds1-19-4     mds1-2-1      mds1-2-2      mds1-2-3
mds1-2-4      mds1-3-1      mds1-3-2      mds1-3-3      mds1-3-4
mds1-4-1      mds1-4-2      mds1-4-3      mds1-4-4      mds1-5-1
mds1-5-2      mds1-5-3      mds1-5-4      mds1-6-1      mds1-6-2
mds1-6-3      mds1-6-4      mds1-7-1      mds1-7-2      mds1-7-3
mds1-7-4      mds1-8-1      mds1-8-2      mds1-8-3      mds1-8-4
mds1-9-1      mds1-9-2      mds1-9-3      mds1-9-4      mds1-io1
mds1-io10     mds1-io11     mds1-io12     mds1-io13     mds1-io14
mds1-io15     mds1-io16     mds1-io17     mds1-io18     mds1-io19
mds1-io2      mds1-io3      mds1-io4      mds1-io5      mds1-io6
mds1-io7      mds1-io8      mds1-io9      net1          net10
net11         net12         net2          net3          net4
net5          net6          net7          net8          net9

Insert source [any]:
ESUx> _

• * Target Port= - Insert port target; select from options?

  ESUx> flowmirroring <enter> Insert source [any]: any <enter> Insert target port : ? <enter> Target is one of : - MDS1-ESU-1...MDS1-ESU-6 where = A or B. Insert target port :_

• * Filter= - Insert desired filter; select from options?

  Note: The target port must be locked before mirroring.

  ESUx> flowmirroring <enter> Insert source [any]: any <enter> Insert target port : mds1-esub-2 <enter> Insert desired filter : ? <enter> Filter is the pcap filter you wish to apply. Filter examples: vlan 100 ip src host 10.0.0.1 ip dst host 10.0.0.1 vlan 100 and ip src host 10.0.0.1 vlan 100 and not ip src host 10.0.0.1 vlan and not igmp vlan and igmp vlan 100 and igmp Insert desired filter : _

Enable Mirroring

To enable flowmirroring, follow these steps:

1. Open a CLI session.
2. From the ESUx> command line, input flowmirroring any mds1-esub-2 valn 100, and press Enter. The prompts will prompt for a source, target port, and a filter.

   ESUx> flowmirroring any mds1-esub-2 vlan 100 <enter> Adding port mirroring... ...operation completed successfully Filter is set and switch is mirroring flow. ESUx> _

3. Flow mirroring is enabled and mirroring packets to the observation port.